flink-user mailing list archives

Hi guys,
I was trying to implement Hello World from slide 36 from
http://www.slideshare.net/FlinkForward/k-tzoumas-s-ewen-flink-forward-keynote
but I have problem with EOFTrigger - is it something I should implement by
myself? I cannot find it in Flink libraries.
Cheers,
Kamil